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- Energy conservation[remove]20
- Environmentalism3
- Green living3
- Buildings2
- Dwellings2
- Freedom of religion2
- Ministry (Periodical)2
- Power resources2
- Seventh-day Adventist universities and colleges2
- Sunday legislation2
- United States2
- Air filters1
- Andrews University1
- Andrews University -- Buildings1
- Attitude (Psychology)1
- Awards1
- Bullock, Geoff1
- Ceiling fans1
- Church buildings1
- Cover story1